GREY'S ANATOMY - "Before and After" - Meredith examines Archer while Addison and Naomi stay near his bedside, on "Grey's Anatomy," THURSDAY, FEBRUARY 12 (9:00-10:02 p.m., ET) on the ABC Television Network. (ABC/RON TOM) KATE WALSH, GRANT SHOW, ELLEN POMPEO, AUDRA MCDONALD